EP2693451A4 - Sintered neodymium magnet - Google Patents

Sintered neodymium magnet

Info

Publication number
EP2693451A4
EP2693451A4 EP12863911.9A EP12863911A EP2693451A4 EP 2693451 A4 EP2693451 A4 EP 2693451A4 EP 12863911 A EP12863911 A EP 12863911A EP 2693451 A4 EP2693451 A4 EP 2693451A4
Authority
EP
European Patent Office
Prior art keywords
neodymium magnet
sintered neodymium
sintered
magnet
neodymium
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
EP12863911.9A
Other languages
German (de)
French (fr)
Other versions
EP2693451A1 (en
Inventor
Masato Sagawa
Tetsuhiko Mizoguchi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Daido Steel Co Ltd
Original Assignee
Intermetallics Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Intermetallics Co Ltd filed Critical Intermetallics Co Ltd
Publication of EP2693451A1 publication Critical patent/EP2693451A1/en
Publication of EP2693451A4 publication Critical patent/EP2693451A4/en
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/032—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials
    • H01F1/04—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials metals or alloys
    • H01F1/06—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials metals or alloys in the form of particles, e.g. powder
    • H01F1/08—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials metals or alloys in the form of particles, e.g. powder pressed, sintered, or bound together
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/032—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials
    • H01F1/04—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials metals or alloys
    • H01F1/047—Alloys characterised by their composition
    • H01F1/053—Alloys characterised by their composition containing rare earth metals
    • H01F1/055—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5
    • H01F1/057—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B
    • H01F1/0571—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/032—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials
    • H01F1/04—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials metals or alloys
    • H01F1/047—Alloys characterised by their composition
    • H01F1/053—Alloys characterised by their composition containing rare earth metals
    • H01F1/055—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5
    • H01F1/057—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B
    • H01F1/0571—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes
    • H01F1/0575—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes pressed, sintered or bonded together
    • H01F1/0577—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes pressed, sintered or bonded together sintered
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C33/00—Making ferrous alloys
    • C22C33/02—Making ferrous alloys by powder metallurgy
    • C22C33/0257—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements
    • C22C33/0278—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements with at least one alloying element having a minimum content above 5%
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/032—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials
    • H01F1/04—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials metals or alloys
    • H01F1/047—Alloys characterised by their composition
    • H01F1/053—Alloys characterised by their composition containing rare earth metals
    • H01F1/055—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5
    • H01F1/057—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/0253—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing permanent magnets
    • H01F41/0293—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing permanent magnets diffusion of rare earth elements, e.g. Tb, Dy or Ho, into permanent magnets
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C2202/00—Physical properties
    • C22C2202/02—Magnetic
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/005—Ferrous alloys, e.g. steel alloys containing rare earths, i.e. Sc, Y, Lanthanides
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/10—Ferrous alloys, e.g. steel alloys containing cobalt
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/16—Ferrous alloys, e.g. steel alloys containing copper

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Power Engineering (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Organic Chemistry (AREA)
  • Metallurgy (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Hard Magnetic Materials (AREA)
  • Powder Metallurgy (AREA)
  • Manufacturing Cores, Coils, And Magnets (AREA)
EP12863911.9A 2011-12-27 2012-12-27 Sintered neodymium magnet Ceased EP2693451A4 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2011286864 2011-12-27
JP2012026720 2012-02-09
PCT/JP2012/083789 WO2013100011A1 (en) 2011-12-27 2012-12-27 Sintered neodymium magnet

Publications (2)

Publication Number Publication Date
EP2693451A1 EP2693451A1 (en) 2014-02-05
EP2693451A4 true EP2693451A4 (en) 2014-07-30

Family

ID=48697490

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12863911.9A Ceased EP2693451A4 (en) 2011-12-27 2012-12-27 Sintered neodymium magnet

Country Status (6)

Country Link
US (2) US9412505B2 (en)
EP (1) EP2693451A4 (en)
JP (1) JP5553461B2 (en)
KR (1) KR101485282B1 (en)
CN (2) CN103650072B (en)
WO (1) WO2013100011A1 (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013100011A1 (en) * 2011-12-27 2013-07-04 インターメタリックス株式会社 Sintered neodymium magnet
EP2800108B1 (en) 2011-12-27 2018-04-11 Intermetallics Co., Ltd. Sintered neodymium magnet
KR20150002638A (en) * 2012-03-30 2015-01-07 인터메탈릭스 가부시키가이샤 NdFeB-BASED SINTERED MAGNET
US9837207B2 (en) 2012-07-24 2017-12-05 Intermetallics Co., Ltd. Method for producing NdFeB system sintered magnet
JP6488976B2 (en) * 2015-10-07 2019-03-27 Tdk株式会社 R-T-B sintered magnet
JP6493138B2 (en) * 2015-10-07 2019-04-03 Tdk株式会社 R-T-B sintered magnet
JP6743549B2 (en) * 2016-07-25 2020-08-19 Tdk株式会社 R-T-B system sintered magnet
US11328845B2 (en) * 2017-06-27 2022-05-10 Daido Steel Co., Ltd. RFeB-based magnet and method for producing RFeB-based magnet
JP7314513B2 (en) * 2018-07-09 2023-07-26 大同特殊鋼株式会社 RFeB sintered magnet
US11527340B2 (en) 2018-07-09 2022-12-13 Daido Steel Co., Ltd. RFeB-based sintered magnet
CN109161819B (en) * 2018-09-20 2020-07-07 京磁材料科技股份有限公司 Preparation method of sintered neodymium-iron-boron magnet with low carbon content
CN113593880B (en) * 2021-07-09 2024-06-25 安徽万磁电子股份有限公司 Grain boundary diffusion method of high-coercivity NdFeB magnet

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2169689A1 (en) * 2007-07-02 2010-03-31 Hitachi Metals, Ltd. R-fe-b type rare earth sintered magnet and process for production of the same
WO2010109760A1 (en) * 2009-03-27 2010-09-30 株式会社日立製作所 Sintered magnet and rotating electric machine using same
WO2011004894A1 (en) * 2009-07-10 2011-01-13 インターメタリックス株式会社 Ndfeb sintered magnet, and process for production thereof

Family Cites Families (24)

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Publication number Priority date Publication date Assignee Title
JPS4831074B1 (en) 1968-08-23 1973-09-26
DE69318147T2 (en) 1993-07-06 1998-11-12 Sumitomo Spec Metals R-Fe-B permanent magnet materials and their manufacturing processes
JP2003297622A (en) 2002-03-28 2003-10-17 Tdk Corp Method of absorbing hydrogen, method of grinding hydrogen, and method of manufacturing rare-earth permanent magnet
JP4215240B2 (en) 2003-02-26 2009-01-28 Ｔｄｋ株式会社 Hydrogen grinding method, rare earth permanent magnet manufacturing method
US7618497B2 (en) * 2003-06-30 2009-11-17 Tdk Corporation R-T-B based rare earth permanent magnet and method for production thereof
CN1898757B (en) 2004-10-19 2010-05-05 信越化学工业株式会社 Method for producing rare earth permanent magnet material
JP4702542B2 (en) 2005-12-02 2011-06-15 信越化学工業株式会社 Manufacturing method of RTBC type sintered magnet
US7988795B2 (en) 2005-12-02 2011-08-02 Shin-Etsu Chemical Co., Ltd. R-T-B—C rare earth sintered magnet and making method
US7806991B2 (en) 2005-12-22 2010-10-05 Hitachi, Ltd. Low loss magnet and magnetic circuit using the same
EP1981043B1 (en) 2006-01-31 2015-08-12 Hitachi Metals, Limited R-Fe-B RARE-EARTH SINTERED MAGNET AND PROCESS FOR PRODUCING THE SAME
EP2899726B1 (en) * 2006-03-03 2018-02-21 Hitachi Metals, Ltd. R-fe-b rare earth sintered magnet
JP4840606B2 (en) 2006-11-17 2011-12-21 信越化学工業株式会社 Rare earth permanent magnet manufacturing method
JP4900121B2 (en) 2007-03-29 2012-03-21 日立化成工業株式会社 Fluoride coat film forming treatment liquid and fluoride coat film forming method
US20080241513A1 (en) 2007-03-29 2008-10-02 Matahiro Komuro Rare earth magnet and manufacturing method thereof
US20080241368A1 (en) 2007-03-29 2008-10-02 Matahiro Komuro Treating solution for forming fluoride coating film and method for forming fluoride coating film
JP4564993B2 (en) 2007-03-29 2010-10-20 株式会社日立製作所 Rare earth magnet and manufacturing method thereof
JP4998096B2 (en) 2007-06-06 2012-08-15 日立金属株式会社 Method for producing R-Fe-B permanent magnet
JP5328161B2 (en) * 2008-01-11 2013-10-30 インターメタリックス株式会社 Manufacturing method of NdFeB sintered magnet and NdFeB sintered magnet
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WO2013100011A1 (en) * 2011-12-27 2013-07-04 インターメタリックス株式会社 Sintered neodymium magnet
EP2800108B1 (en) * 2011-12-27 2018-04-11 Intermetallics Co., Ltd. Sintered neodymium magnet

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2169689A1 (en) * 2007-07-02 2010-03-31 Hitachi Metals, Ltd. R-fe-b type rare earth sintered magnet and process for production of the same
WO2010109760A1 (en) * 2009-03-27 2010-09-30 株式会社日立製作所 Sintered magnet and rotating electric machine using same
US20120025651A1 (en) * 2009-03-27 2012-02-02 Matahiro Komuro Sintered magnet and rotating electric machine using same
WO2011004894A1 (en) * 2009-07-10 2011-01-13 インターメタリックス株式会社 Ndfeb sintered magnet, and process for production thereof
EP2453448A1 (en) * 2009-07-10 2012-05-16 Intermetallics Co., Ltd. Ndfeb sintered magnet, and process for production thereof

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
See also references of WO2013100011A1 *
SEPEHRI-AMIN H ET AL: "Grain boundary structure and chemistry of Dy-diffusion processed Ndâ Feâ B sintered magnets", JOURNAL OF APPLIED PHYSICS, AMERICAN INSTITUTE OF PHYSICS, US, vol. 107, no. 9, 14 May 2010 (2010-05-14), pages 9A745 - 9A745, XP012134249, ISSN: 0021-8979, DOI: 10.1063/1.3351247 *

Also Published As

Publication number Publication date
US20140062631A1 (en) 2014-03-06
KR20130126705A (en) 2013-11-20
KR101485282B1 (en) 2015-01-21
US9412505B2 (en) 2016-08-09
US20160300650A1 (en) 2016-10-13
CN103650072B (en) 2016-08-17
JPWO2013100011A1 (en) 2015-05-11
CN103650072A (en) 2014-03-19
US10290408B2 (en) 2019-05-14
JP5553461B2 (en) 2014-07-16
WO2013100011A1 (en) 2013-07-04
CN106448984A (en) 2017-02-22
EP2693451A1 (en) 2014-02-05

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